XXV111 



In the winter of that year he delivered the lectures and superintended 

 the practical studies in the anatomical school of Marburg, as sub- 

 stitute for Professor Bruhl, who was incapacitated by ill health ; and 

 next year, being invited by the Professor, and prompted by his own 

 inclination, he established himself as " Privatdocent " in the Uni- 

 versity, and gave lectures on Physiology, Comparative Osteology, 

 and on Gall's Craniology, which then attracted much attention. 

 Feeling, however, the need of further preparation, he went again to 

 Wiirzburg to work at dissection under Hesselbach, and afterwards to 

 Paris, where he studied hard in the great museum of the Garden of 

 Plants, and attended the lectures of Cuvier, Geoffrey St.-Hilaire, 

 Lamarck, Dumeril, and Haiiy. 



On his way to Paris, Tiedemann had made the acquaintance of 

 Soemmering at Frankfort, and gained his favourable opinion ; and 

 now, through the recommendation of that great anatomist, who had 

 in the mean time removed to Munich, he was offered the Professor- 

 ship of Zoology and of Human and Comparative Anatomy in the Uni- 

 versity of Landshut. This offer, flattering as it was to so young a 

 man, he naturally accepted, and to Landshut he accordingly went in 

 1805. There he found a new and handsome anatomical theatre, but 

 no collection of preparations or other appliances for teaching. During 

 the first few years of his incumbency therefore he had to labour 

 hard to supply these wants, besides discharging his professorial duties, 

 even to the temporary injury of his health. 



The war between France and Austria having broken out afresh in 

 the spring of 1809, Landshut and its neighbourhood became the 

 scene of active military operations, and Tiedemann, in addition to his 

 regular duties, took charge of one of the temporary hospitals esta- 

 blished in the place. But in spite of the distractions of these trou- 

 bled times he steadily pursued his scientific work. In that same 

 year appeared the first volume of his ' Zoologie/ and in 1810 and 

 1814 the two parts of the second volume. The author's object in 

 this work was to combine zoology with comparative anatomy, and to 

 found the classification of animals upon their organization. On the 

 part which comprehends Birds he bestowed especial pains, and with 

 a view to the preparation of it made numerous dissections, measure- 

 ments, and observations of various kinds ; so that it is still valued 

 as a rich store of information on the class to which it refers. 



